[GH-ISSUE #1147] DPC latency increase to 3 ms when nbfc is set to "Read-only" OR "Enabled" normally latency does not exceed 400 µs #985

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opened 2026-02-26 00:34:06 +03:00 by kerem · 1 comment

kerem commented

2026-02-26 00:34:06 +03:00

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Originally created by @000masa000 on GitHub (Jun 12, 2021).
Original GitHub issue: https://github.com/hirschmann/nbfc/issues/1147

Describe the bug
I am trying to update an existing config from HP zBook Studio G3 to HP zBook Studio G5 (x360 model)

To Reproduce
click "Read-only" or "Enabled"

Expected behavior
No change in DPC latency when running Latency Mon, instead there is a 4-8 fold increase, affecting audio processing by causing glitching; am trying to tune laptop for live audio performance (quiet fan, low latency real-time performance, no glitches)

System information
Win 10 21H1

NBFC version latest
log files (see NBFC files and directories overview)

Additional context
Latency caused by ACPI.sys, not corrected by tweaking values in the config (attempted various reset and override changes)

Originally created by @000masa000 on GitHub (Jun 12, 2021). Original GitHub issue: https://github.com/hirschmann/nbfc/issues/1147 **Describe the bug** I am trying to update an existing config from HP zBook Studio G3 to HP zBook Studio G5 (x360 model) **To Reproduce** click "Read-only" or "Enabled" **Expected behavior** No change in DPC latency when running Latency Mon, instead there is a 4-8 fold increase, affecting audio processing by causing glitching; am trying to tune laptop for live audio performance (quiet fan, low latency real-time performance, no glitches) **System information** Win 10 21H1 - NBFC version latest - log files (see [NBFC files and directories overview](https://github.com/hirschmann/nbfc/wiki/Files-and-directories-overview)) **Additional context** Latency caused by ACPI.sys, not corrected by tweaking values in the config (attempted various reset and override changes)

kerem

2026-02-26 00:34:06 +03:00

closed this issue
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kerem commented

2026-02-26 00:34:06 +03:00

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@github-actions[bot] commented on GitHub (Dec 11, 2021):

This issue is stale because it has been open more than 180 days with no activity. If nobody comments within 7 days, this issue will be closed

@github-actions[bot] commented on GitHub (Dec 11, 2021): This issue is stale because it has been open more than 180 days with no activity. If nobody comments within 7 days, this issue will be closed